However, Sheffield Wednesday chairman Milan Mandaric has not given up hope of another Hillsborough return for the striker.
The 20-year-old, who scored eight goals in eleven appearances for the Owls, was recalled by Gus Poyet this week with rumours suggesting he could be heading to Brighton.
Mandaric: "There is a good chance that we will get Connor back.
"Connor wanted to stay with us. He loved it here and liked being part of the club.
"It is important we get him back. We all know what he has done for us. I am very optimistic something can be done."